black box vs feint

black box

noun
  • A type of theater characterized by a lack of decoration or complex mechanisms. 

  • A flight recorder; the brightly colored cockpit voice recorders and flight data recorders in an aircraft designed to aid in determining the cause of an accident. 

  • A device used in phreaking that prevents the calling party from being billed for the call placed. 

  • A theoretical construct or device with known input and output characteristics but unknown method of operation. 

  • Any similar device on motor vehicles, such as rail event recorders and ship trip recorders. 

verb
  • To focus on the inputs and outputs without worrying about the internal complexity. 

feint

noun
  • Something feigned; a false or pretend appearance; a pretence or stratagem. 

  • A blow, thrust, or other offensive movement resembling an attack on some part of the body, intended to distract from a real attack on another part. 

  • A movement made to confuse an opponent; a dummy. 

adj
  • Of lines printed on paper as a handwriting guide: not bold; faint, light; also, of such paper: ruled with faint lines of this sort. 

  • Of an attack or offensive movement: directed toward a different part from the intended strike. 

verb
  • To direct a feint or mock attack against (someone). 

  • To direct (a blow, thrust, or other offensive movement resembling an attack) on some part of the body, intended to distract from a real attack on another part. 

  • To make a feint or mock attack. 

How often have the words black box and feint occurred in a corpus of books? (source: Google Ngram Viewer )